DR. NICHOLAS OESER
NPI 1396098133
Psychologist in Petaluma, CA
About Dr. Nicholas Oeser NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS OESER (NPI 1396098133) is an individual psychologist in Petaluma, California, licensed in California (30082) and active in the NPI registry since October 2012. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Nicholas Oeser is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Nicholas Oeser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nicholas Oeser's NPI number?
The NPI number for Nicholas Oeser is 1396098133. It was assigned to this individual provider in the NPPES registry on October 17, 2012. The provider is also known as Nick Oeser.
Where is Nicholas Oeser located?
Nicholas Oeser practices at 1501 Weaverly Dr, Petaluma, CA 94954. The listed phone number is (650) 274-7272.
What is Nicholas Oeser's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Nicholas Oeser enrolled in Medicare?
Yes. Nicholas Oeser is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Nicholas Oeser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Oeser reassigns Medicare benefits to Permanente Medical Group Inc (Vallejo, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Oeser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nicholas Oeser was last updated on August 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.